Table 3 Subgroup analysis of HF events. Notes: HF: heart failure; HFpEF: Heart failure with preserved ejection fraction; HFrEF: Heart failure with reduced ejection fraction; RCT: Randomized controlled trial; CS: Cohort Study; EU: Europe and America; AVNA: atrioventricular node ablation; PM: pacemaker; CA: catheter ablation; NCA: non-catheter ablation; RR: risk ratio; CI: confidence interval; P^a for RR; P^b for heterogeneity; P^c for meta regression. In cases where the same study includes data from two separate groups due to different follow-up times, patients and article counts are recorded only once.HFpEF: Heart failure with preserved ejection fraction.HFrEF: Heart failure with reduced ejection fraction.

From: Meta-analysis of comprehensive prognostic evaluation in patients with atrial fibrillation complicated by heart failure after catheter ablation